Modelling and Analysis of a Transformer based MEMS Piezoelectric Vibration Type Microgenerator

This work is focused on the feasibility of using the transformer type linear model in describing both the static and the dynamic behaviour of the piezoelectric microgenerator subjected to an external vibration force in the z-axis, i.e, 33 mode. Using this model, the microgenerator output parameters (voltage & power) are studied according to the input parameters (force and frequency) for a certain piezoelectric type and dimensions. Many 2D plots are shown to explain how the input and the piezoelectric material choice can be varied to obtain the optimum output parameters. MatLab programs are written to simulate the model for No load (open circuit) and the load cases. A transient analysis is also carried out using the Multisim software to test the linearity of the model.